Window-envelop.



w. E. swi'FT'. Wmoow ENVELOP.

APPLICATION FILED OCTIB. I914.

Pawnted Apr. 30, 1918.

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- llat To all whom it 32 concern:

Be it known that l, WILLARD 1E. Swm'r,

a citizen of the United States, residing at Worcester, in thecounty ofWorcester and Commonwealth of Massachusetts, have invented a new anduseful Improvement in indow-Envelops, of which the following is aspecification accompanied by drawings fong a part of the e.

My present invention relates to that class of envelops hire as windowenvelops, or envelope in which means are provided for disclosin theaddress upon the inclosure Ml within the envelop. in this class ofenvelope an opening is usually formed in the body portion of the 'envelothrough which the ll may be read.

is mmetimes covered with transparent aper plied to the inside of'thcenvelop efore rh blank is folded, or, in lieu of an opening a sion ofthe body portion of the envelop is rendered transparent by appl eretosome oleaous terial.

The obj of my present invention are to enable the lower fold or edge ofthe inclosure to serve as a for the address which ma be or written inpronimity to t e lower edge of the inclosure as the se is folded forinsertion in the envelop; to facilitate the nipulation of letters, intrassion through the mails; a n p 2 i :1 l esion of the tra parent patchwhen applied to cover the ope a" in the body portion of the envelop. asobjects ll accomplish by the construction and arrangement of parts ashereinar describ and illustrated in the aci i. 2 reresents the blanlz ine nded or M which the envelop is me n Ill the position of the window, anillustra by broken lines, the folded pr sition of the end flaps and backdap.

Fig. 3 is a central sectional view of a com le envelop shown on the pleof the roken line Fig. l.

Sar w: a characters r fer to similar p rts in the dierent 1 v p l. repat a folded envelop ll of a nee consists o a r '3 out through thetpeotllcation of letters Patent.

, by the broken lines 12, 12, and 13.

end flaps are first folded upon the body orit open-- envelop extendsparent bunched to ar form, having a window ope hppllcaflon died tlctohert, 191d. rial lilo. tdhttt.

portion of the envelop and covered b a patch of transparent paper 4, inout ine substantiallfy like the openin 3, and represented in ull in Fig.2. he envelop l is formed of a blank shown in extended form in Fig. 2and comprisin a seal flap 5, end flaps 6, 6, and a back dap 7. The blankis folded upon the broken lines 8, 9, l0 and 11 inclosing a rectangularspace which forms the body portion of the envelop and upon which the endflaps 6, 6, and back flap 7 are folded, as represented tion of theenvelop and the back flap is folded over the end flaps, to which it itunited at its overlapping edges M, 14, in the usual manner.

Before the envelop is folded, the opening 3 is formed in the bodyportion of the envelop, which in the present instance is ,covered by thetransparent patch 4L, attached to the blank by a narrow stripe of gum,preferably applied to the blank aroun the openin 3.

"lhe above described method of constructing a window envelop correspondswith that now practised with the exception that the o ening 3 is formedat some distance from t e lower edge of the envelop, so that a narrowstrip foin the body portion of the etween the opening and the line offold 11 between the body portion of the envelop and the back flap. lnproviding an address upon the folded inclosure it is necessary that theosition of the address be made to register th the opening 3, preferablyin the center of the opening. This ll ll tion of a window envel in whicha a: e

patch a i in the failure to cause a close ill of the transparent atchclose to the edof the opening. l it causes a pocket or space between theed of the openin and the trarent la catch t e corners of envelope asthey ther in the oary manr ation of letters, in a imion throng the mailse g is plac at some we are e low of the envelop are The

is appli to cover the openme i increases the liability of the corners ofletters being caught therein.

f My present improvement consists in forming the window with its loweredge coincident with the line of fold 11 between the body portion of theenvelop and the back flap. When the line of fold of the inclosure hasbeen determined the address may be applied to the inclosure withdefinite reference tothe line of fold of the inclosure, said line offold of the inclosure always corresponding to the lower edge "of thewindow, and also with the lower edge of the envelop. This enables theaddress to be applied tothe inclosure in exact position for-its properregistrati n with the window. i

W on the window is formed by an opening 3 covered by a transparent patch4, a pocket, 38 above described, can only be formed upon the upper edgeof the window, as any ungummed space around the lower side of the windowopening between the envelop and the transparent patch will occur on theback side of the envelop, for the reason, that the lower edge of thepatch 4 is applied to the back flap 7 and not to the body portion of theenvelo i As represented 111 Fig. 2 the entire lower folded upon itselfand reof folding, thereby giving greater security to the attaehnientofthe transparent patch.

It will thus be seen "that the envelop formed as above described,provides an inclosure pocket, having a window in the front wall andhaving its rear wall constituted by the folded flaps of the blank, withone side of said window substantially coincident with the line of foldbetween the front wall and the back flap.

I claim 1. An envelop for an address bearing inclosure, wall, one ofsaid walls having a window opening therein, with the edge of saidopening substantially coincident with the line of fold between saidwalls, at the bottom of the envelop,-and a transparent patch attached tocomprising a front wall and a rear the inside of the envelop tocover-said open- 1 ing and all sides.

2. An envelop for an address bearing inclosure, comprising a front walland a rear wall, one of said walls having a window opening therein, withthe edge of said opening substantially coincident with the line of foldbetween said walls, at the bottom of the envelop, and a transparentpatch covering said opening, said patch having a fold corresponding tothe fold between said walls, and being attached to each wall on oppositesides of its line of fold.

Dated this fitth day of October, 1914:.

"tiwinnnnn E. SWIFT.

Witnesses:-

PENELOPE COMIBERBACH, GEO. H. KENNEDY, Jr.

overlapping the margin thereof on

